הפסקה מביש הודעה nitrogen atomic number סוחר דנמרק כישלון
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Nitrogen Is A Chemical Element With Symbol N And Atomic Number 7. Stock Photo, Picture And Royalty Free Image. Image 136394143.
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Chem Teaching - Nitrogen is a chemical element with the symbol 'N' and atomic number 7 Dinitrogen N2 forms about 78% of Earth's atmosphere, making it the most abundant uncombined element. Nitrogen